Electronic telephone system



April 8, 1958 RB. TROUSDALE 2,830,121

ELECTRONIC TELEPHONE SYSTEM Filed March 4, 1955 47 Sheets-Sheet 1 LINE CIRCUIT NOTEiSCONNECTED ON PARTY umss ONLY JNVENTOR. I ROBERT B. TROUSDALE AGENT A ril 8, 1958 Filed March 4, 1955 R. B. TROUSDALE ELECTRONIC TELEPHONE SYSTEM 47 Sheets-Sheet 2 LINKA AH LINK M2 MULTIPLE ToNEs OUT 1 POINT FIG. l4

RP I4A\ I RELEASE RELEASE LINE 2; RP PULSE PULSE s FINDER NFG AMPLIFIER GENERATOR ASl-A FCT FIOLIS FIG. I? $20 I A M III I I I6A LG MPx s l TR A'- WTCH CON 0L LB. POSITIVE UNITS v FIG.9 4 PosITIvE TENs RDP AII-A AL-A FB LINKB -/I3B ToNEs OUT4 eIz MULTIPLE POINT RP |4B\ l |7B\ Rs RP RELEAsE RELEAsE As E "PULSE 4 PULSE F|NDER Asks AMPLIFIER GENERATOR FCT I II III I ,Isa LB MPX c SP POSITIVE UNITS SWITCH cONTROI. 4 POSITIVE TENS LG RDP ASl-B AL-B FB LG April 8, 1958 R. B. TROUSDALE 2,830,121

ELECTRONIC TELEPHONE SYSTEM Filed March 4, 1955 47 Sheets-Sheet 5 ASI-A LINK ALLOTTER CIRCUIT DIAL TONE TONE . FIG. I2

CONNECTOR FIGS. 33-4I INCL AUXILIARY PULSE AMPLIFIER F|G.9

LB ABP UNITS BUSY LEAD CONVERTER a EMERGENCY SERVICE NUMBER FIGS. IO8'II TENS TONE

TONE

CONNECTOR NEG. TENS NEG. UNITS CBI 2 NECTOR BUSY AMPLIFIER FIG.l8,

FINDER BUSY AMPLIFIER FIG.IO

April s, 1958 Filed March 4, 1955 R. B. TROUSDALE ELECTRONIC TELEPHONE SYSTEM 47 Shets-Sheet 4 DIODE CPII SWITCH 5c DIODE SWITCH J I lsc 24 M-ll M-IZ W3 MULTIPLEXER FROM {T LINE I I FIG.|6 CIRCUITS |3 M-OI NEG.TENS 2;; CHANNEL S 4 PULSE TO LINE cp 3 NEG.UNITS CIRCUITS T MATRIX l3-Ol I 8 DIODE CPOI FIG. l5 SWITCHES -I30l RRP RTP I I ss 9 37 as RINGING SUPERIMPOSING RINGING BUSY RINGING 6 1m DIAL TONE GENERATOR SUPPLY 4 INTERRUPTER GENERATOR |=|e.27 F|G.28 FIG.29 FIG.3I

* BUSYTONE DIALTONE .RTC

RRC

FIG.4

April 8, 1958 R. B. TROUSDALE ELECTRONIC TELEPHONE sYsTEII Filed March 4, 1955 47 Sheets-Sheet 5 FIG 5 LINK C A /l3C 7 CH LINK MULTIPLE 4 TONES OUT 02 POINT I4C RP I I5C- I7C\ s RP RELEASE RELEASE As LINE r -FR PULSE PULSE FINDER :il -C AMPLIFIER GENERATOR PCT I II I+VAI I I C MPX Sc SWITCH /6 7 LB P0$.UNITS 4 SPI Pos.TENs 4 CONTROL 1 LG RDP ASl-C AL-C ./25 F5 MULTIPLEXER MPX AMPLFIER RINGING CONTROL RC DRIVER 1 FIG. l4

NEG. IPOS. NEG.

TENS TENS UNITS POS.UNITS II II RDP NTIZIBH PTIIHQ NUIIZ'SM pullzlsro SP REGISTER TENS RING UNITS RING SAMPLING DRIVE AMPLIFIER AMPLIFIER PULSE EF CIRCUITS CIRCUITS AMPLIFIER 35- FIG.24 FIG.23 FIG.22 29 33 I I II I I 3 I I* I I SP0 IIIIIE" 34 32 3o N 52 3? TENS RING UNITS RING EF Q NPUT PULSE RED CIRCUIT LD C!RCU|T GENERATOR ,43

URD UNITS RING FIGS. I DRIVE 24am FIG.23 FIG.22 m1 April 8, 1958 R. B. TROUSDALE 2,830,121

ELECTRONIC TELEPHONE SYSTEM Filed March 4, 1955 47 Sheets-Sheet e CON N ECTOR P05. P05. TEN UNITS TRUNK HUNTING EXECUTIVE EXECUTIVE CUT m CUT m AMPLIFIER MARKERS FIG.26 FIG. 25

TRUNK HUNTING AMPLIFIER FIG.26

MASTER OSCILLATOR FIG.6

April 8, 1958 R. B. TROUSDALE 2,330,121

ELECTRONIC TELEPHONE SYSTEM Filed March 4, 1955 47 Sheets-Sheet 7 April 1958 R. B. TROUSDALE 2,830,121

ELECTRONIC TELEPHONE SYSTEM V Filed March 4, 1955 47 Sheets-Sheet 8 AUXILIARY PUI SE AMPLIFIER 2O ABP SWITCH COIJTROL I6A CD903 T930 R903 AMPLIFIER SPI 5C FIG.9-

April s, 1958 Filed March 4, 1955 R. B. TROUSDALE ELECTRONIC TELEPHONE SYSTEM 4'7 Sheets-Sheet 9 BUSY LEAD CONVERTER 4 EMERGENCY SERVICE NUMBER CIRCUIT 2| ABP FBI

CDIOOB TIOSO I F I061 EIOGZ I EMITTER FOLLOWER April 8, 1958 R. B. TROUSDALE 2,830,121

ELECTRONIC TELEPHONE SYSTEM I Filed March 4, 1955 47 Sheets-Sheet 1O BUSY LEAD CONVERTER 8 EMERGENCY SERVICE NUMBER CIRCUIT 2| I cIJIIoI ho STA V QUARTER conoz I DECK STATION LINE CIRCUIT v\'@ 0 IIoaI 2 STA, EMERGENCY T I 1 25 SERVICE R k0 PILOT HOUSE LINE CIRCUIT s ,1 sTATIoN STATION N0. LINE CIRCUIT n05; swITCI-I POSITION pus ,Pul

gS'ARTER DECK I PTZ PTO 3 PILOT HOUSE TENS A POS.UNITS EMERGENCY sERvICE NUMBER RDP SWITCH llOO ABP CDIIO3 "p I MPX W ARTIFICIAL U FB BUSY SWITCHES r- PU CDIIO5 PU5 3| CDIIO6 CoIIoa l o-PU5 f a o-Pus CDIIO4 PU7 Au r PU: W Rum LPUB Pos. UNITS l pus M PUO pus \Y UNITS 35 SELECTOR DI K] lllO colIo-r CBI s2.

FIG.II

April 8, 1958 R. B. TROUSDALE 2,330,121

ELECTRONIC TELEPHONE SYSTEM Filed March 4, 1955 47 Sheets-Sheet l1 LINK'ALLOTTER CIRCUIT I9 MANUAL I i clzoa P 2005 20C IZOOA 1210s TO IZIOC A|:B AL-C FINDER In FIG. l2

April 8, 1958 R. B. TROUSDALE 2,830,121

ELECTRONIC TELEPHONE SYSTEM Filed March 4, 1955 47 Sheets-Sheet l3 0:005 LINK SWITCH ClliCUlT llA MULTIPLE POINT |3A kl XII I -r 4 CI402 V] v H J- OUTPUTS OF ALL '00 R1402 DIODE swrrcn u n cmcuns m LINK A DIODE CONNECT TO THESE SWITCH CPU TERMINALS CONTROL RINGING CONTBOL DRIVER 27 RI408 RI407 RCO FIG. [4 SP April 8, 1958 R. B. TROUSDALE ELECTRONIC TELEPHONE SYSTEM 47 Sheets-Sheet 14 Filed March 4, 1955 SPI sc CHANNEL PULSE MATRIX 26 NEG.

UNITS NTI tug TJNUO m E T o T N C I l l l I l l O 0 P O c w 2 P P C A U C T n k T l .f WNWZ Um 2 [.llk 2 2 2 N I P P C C C k E" ONW Lm Il|\ o 2 P P C c Mll TONES OUT POS. UNIT$- A riT 8, 1958 R. B. TROUSDALE 2,830,121

ELECTRONIC TELEPHONE SYSTEM Filed March 4, 1955 47 Sheets-Sheet 15 SPI I sc LG wean-ms uemuun's IMULTIPLEXER 24 CDISOS clsoz NTI Rl 603 NEGYTENS NE6.{ UNITS I l FIG-.16

TONES OUT POS. UNITS NEG. TENS SP RP April 8, 1958 R. B. TROUSDALE 2,830,121

' ELECTRONIC TELEPHONE SYSTEM Filed March 4, 1955 47 Sheets-Sheet 16 NEG.TENS NEG.UNITS MULTIPLEXER OUTPQLAMPLIFIER 25 MPX AMPLIFIER I700 CDITOI RELEASE PULSE GENERATOR |5A r I M TI73O ASTABLE OSCILLATOR AS Rl70l 1732 ,O --IVV\- iscnnoz c|1o|'= TONES OUT POS.UNITS SP F RP PO5.UN|TS posxraus April s, 1958 Filed March 4, 1955 R. B. TROUSDALE ELECTRONIC TELEPHONE SYSTEM 47 Sheets-Sheet 1'7 MPX FIG. I8

I CONNECTOR BUiY AMPLIFIER 22 TISIO IBIZ RELEASE PULSE AMPLIFIER MA I FB/ ALT MPX

R|ao2 RP fonts oun --Pos. UNITS\ P05. TENS\ A57 RP B RDP April 8, 195 8 T R. B. 'TROUSDALE 2,830,121

ELECTRONIC TELEPHONE SYSTEM Filed'March 4, 1955 v 47 SheetsSheet 18 LINE FIINDER l7A REGISTER UNITS DRIVE PULSE ens UNITS REGISTER uurrs 2 UNITS 0 I980 I990 CDISO? CD|908 Pos.um'rs m N CDI909 cmslo POSJENS 'ALLOTTER [a START As I950A ALLOTTER START I95OB ASl-A RS- FCT April i958 R. B. TROUSDALE 2,830,121

ELECTRONIC- TELEPHONE SYSTEM Filed March 4, 1955 47 Sheets-Sheet 19 4 TENS LINE FINDER I7A REGISTER PULSER R200 2000 1- TENS REGISTER c200: c2002 II TENS! TENS 2 ZOIO 2020 002005 I PTI POS. TENS p72 C020 1 PTO T FINDER PULSE GATE FOLLOWER FCT FIG. 20

April 1958 R. B. TROUSDALE 2,830,121

ELECTRONIC TELEPHONE SYSTEM I Filed March 4, 1955 47 Sheets-Sheet 20 RR? RTP I MASTER OSCILLD 'LOR 28 UNITS RING I JRIVE 43 FIG.2| 

